Cylinder lock



y 1954 e. HAGSTROM 2,677,266

CYLINDER LOCK Original Filed neck 1, 1950 2 Sheets-Sheet 1 INVENTOR ATTORNEYS G. HAGSTROM CYLINDER LOCK May 4, 1954 2 Sheets-Sheet 2 Original Filed Dec. 1, 1950 INVENTOR ATTORNEYb.

atented May 4, 1954 ENT OFFICE CYLINDER LOCK Gotthard Hagstrom, Greenwich, Conn., assignor to The Safe Padlock and Hardware Company, Lancaster, Pa, a corporation of Pennsylvania 14 Claims.

This invention relates to certain improvements in cylinder lock; and the nature and objects of the invention will be readily recognized and understood by those skilled in the art in the light of the following explanation and detailed description of the accompanying drawings illustrating what I at present believe to be the preferred embodiments or mechanical expressions of the invention from among various other em-- bodiments, modifications, variations, combinations and constructiom of which the invention is capable within the broad spirit and scope thereof as defined by the claims hereto appended.

This application is filed as a division of my copending application Serial No. 198,557, filed December 1, 1950, now Patent Number 2,662,387 granted December 15, 1953, for Door Locks.

More particularly my invention is directed to these general types of cylinder locks characterized by a key or cylinder plug rotatably confined and mounted in a casing or cylinder body with an arrangement of pin tumblers adapted upon insertion of a suitable key in the cylinder plug to be actuated from positions locking the plug against rotation to positions unlocking the plug for rotation in the cylinder body by the key inserted in the plug.

A general object of the invention is to provide a design and construction of such a type of cylinder lock which is extremely simple structurally and mechanically, with a minimum of parts designed for low cost manufacture, yet which will maintain precision of operation over a long life under all of the conditions of use to Which such types of locks are normally subjected.

Another object is to provide such a cylinder lock in which the cylinder plug of the lock may b readily removed without the use of special keys or other implements, merely by a simple manual manipulation of the cylinder plug and associated mechanism.

Another object is to so provide for such cylinder plug removal that inadvertent displacement of the tumbler and driver pins from the lock body and from the plug will be prevented without requiring the use of a so-called following or the like tool such as commonly used by locksmiths in changing the keying of a cylinder look.

A further object is to provide a design of cylinder lock and removable cylinder plug, in which the plu may be conditioned for withdrawal and removal from the lock merely by rotating the plug from normal position to position with a fixed pin on the plug lined up with a groove disposed longitudinally of the lock body.

Another object is to provide such a lock and its removable plug in which when in assembled position in operative connection with the mechanism to be actuated thereby, the plug will be constrained against rotation to plug removal position but will be released for rotation to removal position upon disconnection from the mechanism actuated thereby.

And another object is to provide such a cylinder lock adapted for use with various types of lock actuated and controlled mechanisms.

With the foregoing and various other objects, features and results in view which will be readily apparent from the following detailed description, my invention consists in certain novel features in design and construction, and in combinations and sub-combinations of parts and elements, all as will be more fully referred to and specified hereinafter.

Referring to the accompanying drawings in which similar reference characters refer to corresponding parts and elements throughout the several figures thereof;

Fig. 1 is a view in horizontal section through a portion of a door with a knob operated door lock and latch mechanism installed thereon and having a form of cylinder lock of my invention mounted in the outer knob thereof.

Fig. 2 is a view in vertical section taken as on the line 22 of Fig. 1, and showing the construction and mounting of the cylinder lock in the outer knob and its connection with the latch operating spindle.

Fig. 3 is a perspective view of the cylinder lock of the form of Fig. 2, showing the parts thereof disassembled but in the relative positions to be assumed on assembly.

Fig. 4 is a transverse sectional view taken as on the line 4- of Fig. 2.

Fig. 5 is a view similar to Fig. 4 but showing the cylinder plug rotated to position for withdrawal.

Fig. 6 is a transverse sectional view taken as on the line 6-6 of Fig. 2.

Fig. 7 is a transverse sectional view taken as on the line l-l of Fig. 2.

Fig. 8 is a transverse sectional view taken as on the line S8 of Fig. 2.

Fig. 9 is a transverse sectional view taken as on the line 8-9 of Fig, 2.

Fig. 10 is a transverse sectional View taken as on the line Ill-40 of Fig.2.

In my Patent No. 2,662,387, of which this application is a division, 2. form of cylinder lockof my invention adapted to mountin in the outer knob of a door latch and lock set of the so-called key-in-the-knob type is disclosed by way of an example. While such form and adaptation is also disclosed in this present application it is presented primarily for purposes of explanation and not in all respects by way of limitation to such form and particular adaptation thereof, as the various features and basic combinations embodied in this example are capable of andintended for embodiment in various other forms thereof for use wherever a cylinder type lock, or look employing a cylinder, maybe utilized.

In the example adaptation-as applied to the key in-the-knob door lock unit or set which embodies various inventions claimed in my above identified copending application, the cylinder lock unit is mounted in the outer knob of the door set for operating the door latch actuating spindle thereof. Referring to Fig. 1, such a door lock set is shown as mounted and installed on a door D in operative association with a tubular latch bolt unitL. The door lock set includes the spindle l "ofsquare-or-angular section mounted in position extended through-a transverse bore or sage 2 formed through-the door I) with an inner knob unit I mounted on the spindle end at the innerside of "door D and-an outer knob unit 0 mounted on the spi-ndleend at the outer side of the door. The tubular latch bolt unit L is 'mounted in the door 1) in a suitable bored or mortisedopening 3 formed therein and opening through the outer edge of the door D, with the unit -Lbeing disposed in position with its longitudinal axis perpendicular to the longitudinal axis of the spindle and with the spindle being extended transversely through unit Lin operative connection therewith for retracting the latch bolt 3 of unit-L-upon rotation of the spindle by either knob unit, in the manner generally familiar this art.

The door lock unit or set is mounted on the door D by a mounting" structure which includes a back plate ll located on the inner side of the door across spindle receiving bore 2, and -a lock plate located 'at'the outerside of the door across'the outer-end ofspindle receiving bore 2. The back plate I I is provided with a-bore la for receiving therethrough the spindle it. The lock 'plate20 is formed with a hub or angular flange 24 extended from the outer side thereof providing a'bore therethrough'and through the plate for "receiving the outer end length of the spindle ID.

The lock plate 20 includes the spaced parallel arms 2| extended from the inner sidethereof at opposite sides of the spindle receiving bore through the plate, with these arms being extended into the bore 2 in the door D. The arms 2| are provided at their inner ends with the inwardly facing positioning flanges 22 between which the latch bolt unit L is received and mounted. The inner ends of arms 2! are provided with the lugs'23 bent inwardly therefrom.

tended inwardly through smooth wall bores formed in the back plate H 'with the threaded inner ends of the screws being threaded into the tapped bores 23a of lugs 23 of the lock plate '20. An inner rose l4 isprovided at the inner side of the door over back plate I i andan outer rose l5 i is provided at the outer side of the door over and surrounding lock plate 20.

The inner knob unit I is threaded onto the externally threaded inner endof spindle H3 and is suitably secured thereto so that rotation of this knob in either direction will correspondingly rotate spindle ID to retract latch bolt B of the unit L. This inner knob unit I mounts the spring loaded button member 30. Button member 46 is connected with the end of a push rod 50 which is located in the knob unit and which is reciprocally mounted in and extended through an axial bore 10a in the spindle IS. The button member 40 with push rod 50 connected thereto is continuously biased outwardly to the projected position of the button member and the retracted position of the push rod 59 by the biasing springs 45' and 55.

The outer knob unit 0 includes an insert sleeve 00 on which the annular shank iii of the knob unit is secured with the sleeve member extended outwardly a distance beyond this shank. Shank 6| is radially outwardly flared and has secured to the outer annular edge flange thereof the knob cap 62. Cap 62 is provided with an axial, cir cular opening 52a therethrough in axial alignment with the inner end of the insert sleeve 6-3. This sleeve 60 terminates at its outer end within cap 62 spaced a distance inwardly from the inner side of the outer end wall of the cap. The outer rose has the axial opening l5a therethrough and the outwardly projected length of sleeve 60 is extended through the rose opening and lock plate 28 with the sleeve rotatably received in and extended through the hub forming flange 24 of the lock plate 20. In this mounted position, spindle 10 extends a distance into sleeve Gil, such sleeve having an internal diameter greater than the maximum external diameter of the spindle H3. The open inner end of sleeve 60 is provided with an inturned flange portion which provides at its opposite ends the clutch teeth forming shoulders 66. The radial depth of fiange fiii is such that the flange is spaced from the spindle ill so that the spindle and the knob unit 0 are rotatable relative to each other in the absence of connecting means therebetween.

A clutching mechanism adapted to be actuated by push rod 50 under the control of button mem ber 40, is provided for releasably connecting the sleeve 60 of the outer knob unit 0 with the spindle It so that rotation of knob 0 will effect rotation of spindle iii to retract latch bolt E of unit L. This clutch mechanism includes a clutch sleeve 19 slidably mounted on and over spindle l0 and suitably connected with push rod 5t so that when the push rod and button member 40 are in projected position sleeve 70 is in clutching engagement with clutch teeth 66 of sleeve 30 to thereby engage the outer knob unit 0 with the spindle. When button 40 is depressed to project push rod 50 outwardly the sleeve ill is moved to position declutching outer knob unit 0 from the spindle Hi. In such position of sleeve iii the spindle may then be rotated independently of the outer knob unit 0.

A suitable clutching means'is provided for actuation by outward projection of push rod 59 to effect clutching engagement between the outer knob insert sleeve 60 and the flange 24 of lock plate 20 to thereby lock the outer knob unit 0 to the lock plate against rotation when such'knob unit is declutched from the spindle l0. In this instance such clutching or locking means takes the form of ball members 16 which arecammed by inward projection of push rod '50 into the locking recesses 18 provided in the hub forming flange 24 of the lock plate 20. The details of this clutching or locking mechanism are disclosed and claimed in my Patent No. 2,662,387, hereinbefore identified.

The outer knob unit mounts therein a key operated cylinder lock of the pin tumbler type embodying and in accordance with the inventive features of my present invention. Such cylinder lock following the teachings of the invention comprises basically a cylinder body If!!! having a driver pin case IOI extended longitudinally therealong and radially outwardly from one side thereof, and a cylinder plug P which is rotatably mounted in the body I00 and is provided with the usual key way or slot K opening through one side or end of the plug for receiving therein an operating key.

The cylinder body I00 is of tubular form pro- Vidlllg a circular bore or opening I02 extending axially therethrough and opening through the opposite ends of the body. This cylinder body is provided with a series of spaced bores I03 therethrough along the under or inner side of an opening in the driver case IOI for reciprocal projection therethrough of the usual spring loaded driver pins I04 which are reciprocally mounted in the driver case. Diametrically opposite the driver case the cylinder body I00 is provided with a rib formation I05 which extends longitudinally therealong and which is projected outwardly therefrom to form at the inner side thereof a groove I06 which opens at its opposite ends through the ends of the cylinder body. This rib I at is provided with spaced bores I0! through the outer side wall thereof which are located therein in axial alignment with the bores I03 at the driver case side of the cylinder body. Groove see is open at the inner side thereof throughout its length into the bore I02 of the cylinder body.

The cylinder body I 00 is mounted in assembled position within the outer knob unit 0 by securing the inner end of th body to the outer end of the hub insert sleeve 60. This sleeve 60 is formed with diametrically opposite recesses or slots 00a therethrough which receive therein the inner end portions of the driver case I0! and of the rib I05, respectively, of the cylinder body I08. The forward portion of insert sleeve 00 is formed with an internal diameter to receive therein the rear, externally cylindrical end portion of the cylinder body I00. Cylinder body I00 is thus rigidly held against independent axial movement in relation to sleeve 60 in position in knob unit 0 with the forward end of the body being located adjacent the inner side and axially aligned with the opening 62a in knob cap 52.

In accordance with a feature of the invention the cylinder plug P is assembled with and is adapted to rotate an actuator sleeve I I0 by which rotation of the cylinder plug by a key inserted therein will effect rotation of a mechanism or member with which the sleeve may be connected, such for instance as the spindle I0 for actuating th latch bolt unit of the example door lock and latch set.

In this instance the actuator sleeve H0 is formed as a cylindrical, tubular member having a longitudinal slot III through one side thereof which extends to and opens through opposite ends of the sleeve. The actuator sleeve III has an external diameter to be rotatably received and journaled in bore I02 of cylinder body I00.

In the mounted position of the actuator sleeve I I0 in the cylinder body I00 the sleeve extends completely through bore I02 with its forward end at the forward or outer end of the cylinder body but with its inner end portion projected a distance inwardly into the insert sleeve 60. At its inner end the actuator sleeve I I0 is provided with a pair of rearwardly extended teeth I I2 positioned at opposite sides of slot III in diametrically opposite locations on the sleeve. The spindle I0 of the example mechanism with which the actuator sleeve II 0 is in operative association, is provided at the outer end thereof with a head us which is suitably fixed thereto and which is provided with a pair of forwardly extended teeth I I5 located at diametrically opposite positions on the head. The actuator sleeve IIO extends inwardly into the insert sleeve 60 a distance to locate the teeth II2 thereof in positions for engaging upon rotation of the sleeve the forwardly extended teeth H5 located at diametrically opposite positions on the head II4. In normal position the pairs of teeth II2 and H5 are approximately apart so that upon rotation of the actuator sleeve I I0 through the required number of degrees the teeth II2 of the sleeve will engage the teeth II5 of the spindle head H4 and upon further rotation of sleeve H0 in the same direction the spindle I0 will be rotated thereby to effect actuation of the latch bolt B of the latch bolt unit.

The cylinder plug P is formed at the forward end thereof with a radially extended flange I20 therearound for engagement against the forward end edge of the actuator sleeve H0 and the forward end of the cylinder body I00 when the plug P is mounted in assembled position in the sleeve. The key slot K opens through the forward flanged end of plug P in the usual manner familiar in this art. Along one side of the plug P and disposed longitudinally thereof from the end flange I20 to the inner end of the plug there is formed a rib portion I2I having a width to be received and slidably fit in the longitudinal slot I I I of the actuator sleeve H0. The outer face or surface I2Ia of rib portion I2I is formed on a radius transversely thereof such that the surface I2Ia. with the plug mounted in the actuator sleeve I II! lies in the plane and forms a continuation of the cylindrical outer surface of the sleeve. A series of spaced bores I22 are formed in and along the rib portion I2 I. These bores open at their outer ends through the outer surface of the rib portion I2I and at their inner ends open into and along the key slot K. Bores I22 are so located and spaced as to be axially aligned with the bores :03 which open through :body I00 from the driver case IQI. Pin tumblers I23 are reciprocally mounted in the bores I22 in the generally conventional manner for tumbler pin locks.

The opposite longitudinal sides I2Ih of rib l2! are adapted to engage the longitudinal side edges of the slot III in the actuator sleeve II!) to thereby form and provide the operative connection between the plug and the sleeve for rotation of the sleeve by key rotation of the plug. The cylinder plug P has a length greater than the length of the cylinder body I00, and in mounted, assembled position of the actuator sleeve with the plug P therein the plug extends a distance inwardly through the sleeve beyond the inner end of the cylinder body but terminating a distance spaced inwardly from the inner end of the sleeve. A fixed pin or lug I25 is formed from, or as a separate member secured in, the rib portion IEi of plug P and extends radially outwardly from such rib portionin'a position to be slidably engaged against the inner end edge .of the cylinder body I in the assembled position of the actuator sleeve-and plug Pin the cylinder body. The outer end of the insert sleeve 60 is formed of an enlarged internal diameter to provide'anannular space I250, for receiving therein thepin I25. In this manner the plug P is secured against outward displacement in or removal from the-actuator sleeve III) while being freely rotatable :as a unit with that sleeve in the cylinder body I00.

One of the important :features of the invention resides in the design, construction and arrangement of the cylinder lock unit and its cylinder plug :P and actuator sleeve IIiI to permit of the efficient removal and replacement of the cylinder plug.

With the adaptation'of-the cylinder lock of my invention to the door lock set or unit of the il1ustrated example, when the cylinder lock is in mounted .and assembled position in the outer knob cap 0, the cylinder plug P is-constrained or restricted to a maximum range of rotation of approximately 140. Thus, the cylinder plug is limited to a maximum range of rotation of substantially less than 180, and the plug cannot be rotated through a complete half turn of 180 to a position with :pin I25 aligned with the inner end of the longitudinal slot I06 in the rib portion I95 of the cylinder body I09. In this particular adaptation and combination the foregoing limitation of the range through which cylinder plug P may be rotated is effected by the engagement of the teeth II2 of the actuator sleeve lid with the teeth II5of the spindle'head I i iand by the connection :of the lspindle II) in .the latch bolt unit L-with the limited reciprocation provided for the latch bolt Bby such latch unit.

The cylinder plug? is, however, readily .and efiiciently removableirom the cylinder body IE5! and the outer knob unit 0, :without the use of specialkeys or implements and in such amanner that neither the pin tumblers I 23 in the plug .nor

the driver pins IIM- in the driver case IGI will be displaced inadvertently from their receiving bores.

In order to remove the cylinder plug -P from the-cylinder'body Iflfland from the outer door knob unit/ O, the-inner knob I'is first removed by unscrewing it completely from thespindle It. The plate securing screws I2 are then unthreaded from the lugs 23 on arms 2I of locking plate 26 sons to detach back-plate II and thelock plate 20. The outside knob unit '0 is then drawn outwardly from the door D to remove therewith as a unit the spindle I0, lock plate 29 and associated mechanism. The outside knob unit 0 with its attached mechanism is then held in an upsidedown position with the marker A which -is provided on shank -6I as showninFig. 1, in "visible position at the upper side of theshank 'The looking plate 20 is then lined up so that the ball receiving recesses 78 thereof will be in positionsLin a plane midway betweenthe vertical and the horizontal to thereby permit of the locking balls 1'58 entering the recesses.

With the outer knob unit ..O held tin .the foregoing position the push rod 50 isithen :depressed by pressing upon the .outer free .end thereof. While the push: rod. is thus :depressed. the spindle I0 is twisted orirotated in .either :direction to thereby release .thei clutch sleeve with resulting release of this-sleeve for rotation. =Ainormal key for the lock may then: be inserted into normal positionin thecksy slot 'K of .plug Pto set and being adapted to be held by the fingers iniposition over the pintumblers I23 and driver pins I04 in the usual manner to unlock and release the cylinder plug for rotation of the plugin the cylinder body.

The key thus inserted into position in the key slot is then turned to rotate cylinder plug TP and its actuator sleeve I I0 through 180 until theplug pin is lined up with theslot I06 in cylinder body I05 at the inner end of that slot. During such rotation it is of importance to note that the actuator sleeve III] is rotated to position the closed side wall thereof over and-across the driver pin bores I83 which open into the passage I02 of the cylinder body. The actuatorsleeve III] thus functions as a guard or retainer to prevent displacement of these spring loadeddriver pins from their bores in the driver case. During the rotation of the cylinder plug P the pin-tumblers 5553 in the rib portion I2I of the plug which is received in slot I I I of actuator sleeve I I0, are closed against pin tumbler displacement by the side wall of the body 10%. In order to prevent displacement of the pin tumblers I23 fromtheir bores in thegroove Ifiii of cylinder body I60 when the cylinder. plug P is rotated through its half turn with rib portion I2I lined up with'and along slot .I- have provided a removable wedge strip W within the slot I03 to completely occupy that slot from end toend thereof with the inner surface defining a portion of the inner surface surrounding bore I82 at opposite sides of theslot I06. Thus when the cylinder plug P has been rotated through the half turn from normal-position to a position with the pin I25 lined upwith thegroove $58, the pin tumblers -I 23 are retained against d1"- placement by the wedge strip W. From this position the cylinder plug Pmay then be drawn outwardly with pin I25 received in I and sliding tin'ough the groove Hit, the wedge strip W being of course located on the upper side of the plug withdrawn therewith and being the pin tumblerbores until the plug is completely removed.

in .order to insure against the inadvertent withdrawal of the .sleeveI if! from the cylinder body its when the cylinder plug? is withdrawn,

I have provided the sleeve with asmall projection Him for engagement against the rear or inner edge portion of the cylinder body which surrounds the bore-therethrough. Thisprojection mm is located on thesleeveintermediate the inner end of the sleeve and the inner end of the cylinderbody whenuthe sleeve is in assembled, cylinder plug receiving position in the cylinbody. In such assembled position-the prejection iii a isrlooated atthe under sideof the sleeve spaced a distance inwardly from the inner or rear end of the cylinder body. When the cylinder plug -P and the sleeve IIOare rotated to a position with the pin H5 in linewith groove I88 the sleeve projection IIiIa isrotated to position to engage the inner edge portion of the cylinder body in the eventthat the sleeve should be withdrawn with the plug -.to thereby insure against complete Withdrawal of the sleeve from the cylinder body.

After the cylinder plug P has been removed and has been reloaded With the desired combination of I pin tumblers,-the reloaded plug may be readily replaced in the cylinder body I00 by placing a wedge strip W over the pin tumbler bores and then inserting the plug with-the wedge thereon into the cylinder body withthe wedge and pin- I 2 5 in position 'for sliding in [and along groove 1060f the cylindenbody. After-the plug 9 is in fully inserted position it may be then rotated through 180 to its normal position of assembly with pin I25 engaged against the inner edge portion of the cylinder body I00. The key may then be removed from the cylinder plug P and the spindle l0 thereafter turned in the proper direction to engage the clutch sleeve "it with the spindle. The spindle c is then inserted through door opening 2 and through the latch bolt unit L in the usual manner of assembly. The fastening screws l2 may then be inserted to position and rotated to clamp plates H and 2c in position against the door. The inner knob I is then screwed onto the inner end of the spindle it to complete the reassembly and remounting of the lock unit in the door.

While I have in the illustrated example selected an adaptation and application of a cylinder lock of the invention to mounting in the knob of a particular door lock set, it is to be understood that I do not intend to thereby limit the invention to this specific adaptation, combination and mounting. The invention is capable of adaptations and mountings with various other forms of loci: controlled organizations, such for example as padlocks, where it is desired to actuate a member from the cylinder plug and its actuated member or sleeve.

It will further be evident that various modifications, changes, eliminations and substitutions may be resorted to without departing from the spirit and scope of my invention, and hence I do not desire to limit my invention in all respects to the exact and specific disclosures hereof, except as may be required by specific intended limitations thereto in any of the claims hereto appended.

What I claim is:

1. In a cylinder lock in combination; a cylinder body; an actuator sleeve member rotatably mounted in said body; said actuator sleeve being formed with a slot through and disposed longitudinally of the side wall thereof; a cylinder plug slidably mounted in said sleeve member for removal and replacement from and to mounted position therein; said cylinder plug being constrained by said sleeve against rotation relative thereto for rotation of said sleeve and plug as a unit within said cylinder body; means constraining said cylinder plug against removal through limited range of rotation of the plug and sleeve; said cylinder body being formed to release said constraining means for removal of said plug when said sleeve and plug are rotated to a predetermined position outside the limited range of rotation; and means adapted to releasably engage said actuator sleeve to restrict rotation thereof with said cylinder plug to the said limited range.

2. In a cylinder lock, in combination; a cylinder body; an actuator sleeve rotatably mounted in said body; a cylinder plug slidably mounted in said sleeve for removal and replacement of said plug; said cylinder body having pin bores through one side thereof; said cylinder plug having pin bores in one side thereof for alignment with said cylinder body bores in one position of said sleeve and plug insaid body; said sleeve being formed along one side thereof to expose said plug bores therethrough and to constrain said plug against rotation relative to the sleeve in position with said plug bores exposed; a groove disposed longitudinally through said cylinder body in position opposite said body pin bores; and said cylinder plug being'provided with 10 a fixed pin adapted to slidably engage said cylinder body to constrain said plug against removal from said sleeve through a range of rotation of said plug in either direction from a position with said plug pin aligned with said body groove.

3. In a cylinder lock, in combination; a cylinder body; a sleeve member rotatably mounted in and being extended through said body; said cylinder body having pin bores therethrough along one side thereof; a cylinder plug slidably mounted in said sleeve for removal and replacement in said member; said cylinder plug having pin bores along one side thereof for alignment with said body pin bores in one position of said plug and sleeve member in said body; said sleeve formed with a slot along one side thereof to expose said plug pin bores therethrough; means adapted to constrain said cylinder plug against rotation relative to said sleeve member when in position with said plug pin bores exposed through said slot; a groove disposed through said cylinder body longitudinally thereof in position thereof opposite said body pin bores and having its opposite ends opening through the opposite ends of the body; said cylinder plug being projected at one end thereof outwardly beyond the cylinder body and being provided with a pin projected radially therefrom for 'slidable engagement with the adjacent end of the body to constrain the cylinder plug against Withdrawal from said sleeve member through a range of rotation of said plug in either direction from a position of the plug with said pin aligned with said body slot; and means adapted to be releasably engaged with said sleeve member limiting the range of rotation of the sleeve member to prevent alignment of said plug pin with said body groove.

4. In a cylinder lock, in combination; a cylinder body providing a cylindrical bore therethrough and having pin bores positioned in a straight line spaced apart longitudinally of said body opening through the side wall thereof into said body bore; a sleeve member rotatably mounted in. and being extended through said body bore; said sleeve member being formed with a slot through the side wall thereof disposed longitudinally thereof and being open through the opposite ends of said sleeve member; and a cylinder plug having tumbler pin bores located in a straight line spaced apart longitudinally of said plug and opening through the side wall thereof; and said cylinder plug being slidably mounted in said sleeve for removal and replacement but being constrained against rotation therein in position with said tumbler pin bores exposed through said sleeve member slot.

5. In a cylinder lock, in combination; a cylinder body having a circular bore disposed longitudinally and opening through the opposite ends thereof; said cylinder body being provided with pin bores spaced apart longitudinally thereof and opening into said body bore; said cylinder body being formed with a longitudinally disposed groove therein located diametrically opposite said series of pin bores and opening into said body bore and through the opposite ends of the body; a sleeve member rotatably mounted in and being extended through said body bore; said sleeve member being formed through one side thereof with a slot disposed longitudinally and opening through the opposite ends of the sleeve; a cylinder plug provided with tumbler pin bores therein opening through the outer side thereof and being disposed in a straight line spaced apart longitudinally along said cylinder plug; said cylinder amazes plug being slidablymounted and received in-said sleeve for removal-and replacement through one end of the sleeve; said cylinder plugbeingconstrained by said sleeve in position in said sleeve against rotation relative thereto with'said' tumbler pin bores 'exposedthrough said sleeve member slot for alignment with said bodypin bores, respectively; a fixed pinonsaid-cylindeinplug in position projected radiallyoutwardly therefrom in line with said. tumbler pin boresbetween-one end of said plug and said bores and-beingadapted to engage the adjacent end of said cylinder body; and said cylinder plug and sleeve'memberrin one position thereof in-said cylinder body-locating said tumbler pin =boresat andalignedwithsaid body pin bores and being rotatable from such position to position withsaid-oylinder lug-pin aligned with said body groove for withdrawal of said cylinder plug from said sleeve member and cylinder body.

6. In a cylinder lock, in combination a tubu- -1ar cylinder body having a :series of pin bores therethrough disposed .in'a straight line spaced apart longitudinally thereof; said cylinder body being formed to provide a longitudinally disposed groove opening thereinto and being located .in said body opposite said series of pin'bores; a sleeve :member rotatably mounted in and :being extended through saidbody; said sleeve member being formed through one side'thereof with a slot through one side thereof-disposed longitudinally and opening through the opposite ends'o'f the sleeve; a cylinder plug formed witha longitudinall disposed rib portion along one side thereof having a series of tumbler pin bores therein opening through the outer side thereof disposed in a straight 'line spacedapart longitudinally of said cylinder plug, said cylinderplugzadapted to be slidably mounted in said sleeve member with the rib portion of-said plugslidablyi received in said sleeve member slot -witli-=said-tumbler pin bores being exposed through the slot; :said cylinder plug being constrained againstrotation relative to-said sleeve member by engagement'of the opposite sides of said rib portionwith :the adjacent edge portions of said sleeve member-along said slot; a fixed pin on-said :cylinderwplughin position projected radially outwardly therefrom in line'with said tumbler-pinbores between'one end of said :rib portion 1 and said bores and being adapted to slidablyv "engage the adjacent end f said body; and said cylinder plug and sleeve member being adapted '-to be rotated as-1a unit within said cylinder body betweena :position .10- eating said cylinder plug tumbler bores aligned with said body pin'bores;respectively and a'position with said :cylinder plug pin aligned with saidbody groove for withdrawal-and replacement -of saidcylinderplug from and to position insaid sleeve memberand cylinder body.

'7. In combination as defined in claim 5, a wedge strip adapted to be slidablyamounted in saidcylinder body groove for removal therefrom by passagerof said cylinder plug .pin through-said groove upon withdrawal of said cylinderiplug.

8. In a cylinder lock, in combination; vavcylinderebody having a circular bore extending longitudinally therethrough and driver pin bores through the side wall-of said body and opening into said bore; -a sleeve member 1 rotatably mounted insa'id .body bore; said sleeve member being formed with a slot through the sidewall thereof disposed longitudinally of and opening through the opposite ends of the sleeve member; a cylinder .plugslidablyumounted in said sleeve member for removal and replacement through :onewend thereof said' cylinder tplug being engaged '-With-'sa'id='s1eeve member for rotation therewith as a unit; said cylinderplugbeing formed with a series oftumblerlpinfboresthrough'the side wall 'thereof-adapted'to beexposed through said sleeve member slot for-axial alignment'with said cylinder body pin bores, respectively; said cylinder plug-being'providedat one'end'thereof withia pin -projectedradially therefromzin position for slidable engagement against the-adjacent end edge portion of said rcylinder body'for constraining saidlfcylinder 1 plug against removal from said sleeve m'emberzandzcylinder body; and said cylinderbody being dormedwith a passage opening through that end edge portion of said cylinder :body engaged'by saidipin'adaptedto receive said :pin for'removal' of said cylinder plug when the latter is rotated-toposition with said'pin aligned with said passage.

:9. iInra'cylinderlock in combination, a cylinder bcdy;:a sleeve member rotatably "mountedin said 'body;---saidasleeveimemb'er being formed with a slot through the side wall ithereof; a cylinder blugslidablymounted in said sleeve member for removal and replacement through an end thereof irom'ran'd to mounted position therein; said cylinder plug being adapted to be constrained by releasing said plug for removal when said sleeve 'nrem'ber'and' plug arerota'ted to position beyond said range; and means adapted to releasably constrain rotation of said sleeve member and cylinder plug to the said 'limited range of rotation 'in said cylinder body.

'10. In acylinderlock, in combination, a cylinder body; a sleeve member rotatably mounted in said cylinder body; a cylinder plug slidably mounted in said sleeve member for removal and replacement 'throughair end-of said sleeve member from and to mounted position therein; said sleeve "member and cylinder plug being formed to constrain saidplug against rotation in said sleeve member-for rotation "of said plug and sleeve member as a-unit in said cylinder body;

a constraining member adapted to constrain said cylinder'plug'again'st removal from said sleeve member through 'a'predetermined limited range of rotation'oi said plug "and sleeve 'member unit andto release said'plug for removal from said sleeve memberwhen'said plug and sleeve memberunit'isdotated to a position beyond said limited-range; a spindle member mounted for releasable engagement with said plug and sleeve member unit for rotation of'said spindle member'by rotation "of said unit; 'and'means adapted .to'be'engaged" by said spindle member to limit rotationithereof to "the J said limited range of rotation of said .plugiand cylinder sleeve unit.

11. In acy'linder lock," in combination, a.cylinder body providing a boreltherein and having driver. pinbores opening through the side wall thereof into saidfibody bore; a sleeve member rotatablymounted insaid body bore; said sleeve membernhaving .a slot through the side wall thereof; a a vcylinder plug having spin tumbler bores thereinopening-outwardly :through the side wall-thereof; said Icy finder plug being slidably mounted in said :sleeve member for removal and replacement through an end of the sleeve member; said cylinder plug being adapted to be posiin said sleeve member with said pin tumbler bores exposed through said sleeve member slot; means for constraining said cylinder plug in the aforesaid position against rotation relative to said sleeve member; and said sleeve member and cylinder plug being rotatable as a unit in said cylinder body between position aligning said tumbler pin bores and driver pin bores, respectively, through said sleeve member slot and a position for removal of the cylinder plug from said sleeve member with the side wall of the sleeve member adapted to extend over and block the adjacent ends of said drive pin bores in said cylinder, body.

12. In a cylinder lock, in combination; a cylinder body providing a bore therein and having driver pin bores opening through the side wall thereof into said body bore; said cylinder body being provided with a Wedge member disposed longitudinally and forming a portion of the wall defining said cylinder body bore; said wedge member being positioned spaced a distance around said bore from said driver in bores and being slidably mounted in said body for removal and replacement through an end of said body bore; a sleeve member rotatably mounted in said body bore; said sleeve member having a slot through the side wall thereof; a cylinder plug havin; pin tumbler bores therein opening outwardly through the side wall thereof; said cylinder plug being slidably mounted in said sleeve member for removal and replacement through an end of the sleeve member; said cylinder plug bein positioned in said sleeve member with said pin tumbler bores exposed through said sleeve member slot and being adapted to be constrained in such position against rotation relative to the sleeve member; and said cylinder plug and sleeve member being rotatable as a unit in said cylinder body between a position with said tumbler pin bores and said driver pin bores aligned through said sleeve member slot and a position with said pin tumbler bores at and closed by said wedge member for removal of said cylinder plug and wedge member as a unit from said cylinder body and sleeve member.

13. In combination, a cylinder lock including a cylinder body having a. circular bore extending longitudinally therethrough and pin bores through the side wall of said body spaced apart longitudinally therealong and opening into said body bore; a sleeve member rotatably mounted in said body bore and being extended outwardly beyond said body at one end thereof; said sleeve member being formed with a slot through the side wall thereof disposed longitudinally of said sleeve member and opening through the opposite ends thereof; a cylinder plug slid-ably mounted in said sleeve member for removal and replacement through one end thereof; said cylinder plug and said sleeve member being constructed to constrain said plug against rotation relative to the sleeve for rotation of said plug and sleeve in said body bore as a unit; said cylinder plug being formed with a series of pin bores through and spaced apart longitudinally of the side wall of said cylinder plug said cylinder plug being pro vided at one end thereof with a fixed pin in position projecting radially outwardly therefrom for slidable engagement against and around the adjacent end edge portion of said cylinder body to constrain said cylinder plug against removal from said sleeve member and said cylinder body; said cylinder body being formed with a groove in the side wall thereof opposite said pin bores with said groove being open into said body bore and at its opposite ends being open through the ends of said body; said cylinder plug being adapted to be rotated in said cylinder body to position said pin aligned with said groove for removal of said cylinder plug from said sleeve member and cylinder body; a spindle member adapted to be assembled in position axially aligned with the projected end of said sleeve member for engagement by said sleeve member for rotation of said spindle member; and said spindle member being adapted to be mounted for limited rotation thereof to prevent rotation of said sleeve member and cylinder plug to a position with said pin on said cylinder plug aligned with said cylinder body groove.

14. In the combination as defined in claim 13, said sleeve member being provided with spaced teeth on the extended end thereof; and said spindle member being provided with spaced teeth thereon adapted to be engaged by said sleeve member teeth.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Re. 17,936 Shinn Jan. 20, 1931 722,112 Oleschak Oct. 11, 1904 2,007,143 Keil July 2, 1935 FOREIGN PATENTS Number Country Date 158,064 Great Britain Jan. 24, 1921 

